User equipment indication of preferred timing adjustment

Abstract

Methods, systems, and devices for wireless communications are described. Some wireless communications systems may support user equipment (UE) indication of preferred timing adjustment. In some case, a first UE may receive, from a network entity, a downlink message. Additionally, the first UE may receive a first level of interference at the first UE, where the first level of interference is based on an uplink message transmitted from a second UE and at least partially overlaps in time with the downlink message. In some cases, the first UE may transmit, to the network entity, assistance information associated with a timing adjustment based on the first level of interference, where the timing adjustment is associated with one or more uplink messages to be transmitted from the second UE.

What is claimed is: 
     
         1 . An apparatus for wireless communications at a first user equipment (UE), comprising:
 a processor; and   a memory coupled with the processor, with instructions stored in the memory, the instructions executable by the processor to cause the apparatus to:
 receive, from a network entity, a downlink message at the first UE; 
 receive a first level of interference at the first UE, wherein the first level of interference is based at least in part on an uplink message transmitted from a second UE and wherein the first level of interference at least partially overlaps in time with the downlink message; and 
 transmit, to the network entity, assistance information associated with a timing adjustment based at least in part on the first level of interference, wherein the timing adjustment is associated with one or more uplink messages to be transmitted from the second UE. 
   
     
     
         2 . The apparatus of  claim 1 , wherein the instructions are further executable by the processor to cause the apparatus to:
 compare timing associated with reception of the downlink message to timing associated with reception of the first level of interference, wherein the assistance information is based at least in part on the comparison.   
     
     
         3 . The apparatus of  claim 2 , wherein the instructions to transmit the assistance information are executable by the processor to cause the apparatus to:
 transmit an indication of a value associated with the timing adjustment for the second UE, wherein the value associated with the timing adjustment is based at least in part on the comparison.   
     
     
         4 . The apparatus of  claim 2 , wherein the instructions to transmit the assistance information are executable by the processor to cause the apparatus to:
 transmit an indication of a timing report, wherein the timing report comprises an indication of a difference between the timing associated with the reception of the downlink message and the timing associated with the reception of the first level of interference based at least in part on the comparison.   
     
     
         5 . The apparatus of  claim 2 , wherein the instructions to transmit the assistance information are executable by the processor to cause the apparatus to:
 transmit, to the network entity, the assistance information associated with the timing adjustment based at least in part on a difference between the timing associated with the reception of the downlink message and the timing associated with the reception of the first level of interference exceeding a threshold, wherein the difference is based at least in part on the comparison.   
     
     
         6 . The apparatus of  claim 1 , wherein the instructions are further executable by the processor to cause the apparatus to:
 measure the first level of interference, wherein transmitting the assistance information is based at least in part on the first level of interference exceeding a threshold.   
     
     
         7 . The apparatus of  claim 6 , wherein the instructions are further executable by the processor to cause the apparatus to:
 receive, from the network entity, control signaling comprising an indication of the threshold.   
     
     
         8 . The apparatus of  claim 6 , wherein the threshold is based at least in part on one or more parameters at the first UE. 
     
     
         9 . The apparatus of  claim 1 , wherein the instructions to transmit the assistance information are executable by the processor to cause the apparatus to:
 transmit an indication of one or more parameters associated with the downlink message, the uplink message, or both, wherein the assistance information comprises the one or more parameters.   
     
     
         10 . The apparatus of  claim 9 , wherein the one or more parameters are associated with one or more guard bands, one or more guard symbols, one or more power control parameters, or any combination thereof. 
     
     
         11 . The apparatus of  claim 1 , wherein the instructions are further executable by the processor to cause the apparatus to:
 receive, from the network entity, a second downlink message at the first UE; and   receive a second level of interference at the first UE based at least in part on the one or more uplink messages transmitted from the second UE, wherein the second level of interference is based at least in part on the assistance information.   
     
     
         12 . The apparatus of  claim 11 , wherein the second level of interference is less than a threshold. 
     
     
         13 . The apparatus of  claim 11 , wherein the downlink message is associated with a first transmission timing and the instructions to receive the second downlink message are executable by the processor to cause the apparatus to:
 receive the second downlink message associated with a second transmission timing, wherein the second transmission timing is based at least in part on the assistance information.   
     
     
         14 . The apparatus of  claim 13 , wherein the instructions are further executable by the processor to cause the apparatus to:
 receive, from the network entity, a control message indicating the second transmission timing, wherein receiving the second downlink message is based at least in part on the control message.   
     
     
         15 . The apparatus of  claim 11 , wherein a difference between timing associated with the reception of the second downlink message and timing associated with the reception of the second level of interference is below a threshold. 
     
     
         16 . The apparatus of  claim 1 , wherein the instructions are further executable by the processor to cause the apparatus to:
 receive, from the network entity, a feedback message indicating whether the network entity applied the timing adjustment to the second UE based at least in part on receiving the assistance information.   
     
     
         17 . An apparatus for wireless communications at a network entity, comprising:
 a processor; and   a memory coupled with the processor, with instructions stored in the memory, the instructions executable by the processor to cause the apparatus to:
 transmit, to a first user equipment (UE), a downlink message, wherein a first level of interference is associated with the downlink message, the first level of interference based at least in part on an uplink message transmitted from a second UE; and 
 receive assistance information associated with a timing adjustment based at least in part on the first level of interference, wherein the timing adjustment is associated with one or more uplink message to be transmitted from the second UE. 
   
     
     
         18 . The apparatus of  claim 17 , wherein the instructions are further executable by the processor to cause the apparatus to:
 receive the uplink message from the second UE according to a first timing advance; and   determine whether to apply the timing adjustment to the second UE, wherein the timing adjustment is based at least in part on the assistance information.   
     
     
         19 . The apparatus of  claim 18 , wherein the instructions are further executable by the processor to cause the apparatus to:
 apply the timing adjustment to the second UE based at least in part on a value associated with the timing adjustment, wherein determining to apply the timing adjustment is based at least in part on the value being less than or equal to a threshold.   
     
     
         20 . The apparatus of  claim 19 , wherein the instructions to apply the timing adjustment are further executable by the processor to cause the apparatus to:
 transmit, to the second UE, a control message indicating a second timing advance, wherein the second timing advance is based at least in part on the value associated with the timing adjustment; and   receive a second uplink message from the second UE according to the second timing advance.   
     
     
         21 . The apparatus of  claim 18 , wherein the downlink message is associated with a first transmission timing, and the instructions are further executable by the processor to cause the apparatus to:
 transmit a second downlink message according to a second transmission timing, wherein the second transmission timing is based at least in part on a value associated with the timing adjustment.   
     
     
         22 . The apparatus of  claim 17 , wherein the instructions to receive the assistance information are executable by the processor to cause the apparatus to:
 receive an indication of a value associated with the timing adjustment for the second UE, wherein the assistance information comprises the indication.   
     
     
         23 . The apparatus of  claim 17 , wherein the instructions to receive the assistance information are executable by the processor to cause the apparatus to:
 receive an indication of a timing report, wherein the timing report comprises an indication of a difference between timing associated with reception of the downlink message by the first UE and timing associated with reception of the first level of interference by the first UE, wherein the assistance information comprises the timing report.   
     
     
         24 . The apparatus of  claim 17 , wherein the instructions to receive the assistance information are executable by the processor to cause the apparatus to:
 receive an indication of one or more parameters associated with the downlink message, the uplink message, or both, wherein the assistance information comprises the one or more parameters.   
     
     
         25 . The apparatus of  claim 24 , wherein the one or more parameters are associated with one or more guard bands, one or more guard symbols, one or more power control parameters, or any combination thereof. 
     
     
         26 . The apparatus of  claim 17 , wherein the instructions are further executable by the processor to cause the apparatus to:
 transmit, to a second network entity, the assistance information associated with the timing adjustment, wherein the second network entity is associated with the uplink message.   
     
     
         27 . The apparatus of  claim 17 , wherein the first level of interference exceeds a threshold. 
     
     
         28 . The apparatus of  claim 17 , wherein the instructions are further executable by the processor to cause the apparatus to:
 transmit, to the first UE, a control message comprising an indication of a threshold associated with interference at the first UE.   
     
     
         29 . A method for wireless communications at a first user equipment (UE), comprising:
 receiving, from a network entity, a downlink message at the first UE;   receiving a first level of interference at the first UE, wherein the first level of interference is based at least in part on an uplink message transmitted from a second UE and wherein the first level of interference at least partially overlaps in time with the downlink message; and   transmitting, to the network entity, assistance information associated with a timing adjustment based at least in part on the first level of interference, wherein the timing adjustment is associated with one or more uplink messages to be transmitted from the second UE.   
     
     
         30 . A method for wireless communications at a network entity, comprising:
 transmitting, to a first user equipment (UE), a downlink message, wherein a first level of interference is associated with the downlink message, the first level of interference based at least in part on an uplink message transmitted from a second UE; and   receiving assistance information associated with a timing adjustment based at least in part on the first level of interference, wherein the timing adjustment is associated with one or more uplink message to be transmitted from the second UE.